Thin Red Line is a phrase used to show respect for firefighters and first responders injured or killed in the line of duty. As first responders and firefighters are periled, they place their lives second to those they protect. They are forced to face their own fears and grasp for every ounce of courage to perform the necessary task. The Thin Red Line represents the last ounce of courage first responders and firefighters find from within to conquer their deepest fears in order to save and protect the communities they serve.